Acura (Honda) Workshop Service and Repair Manuals

Valve Guide: Specifications

STEM TO GUIDE CLEARANCE: 

Intake: 
Standard (New) .........................................................................................................................................................  0.02 - 0.05 mm (0.001 - 0.002 inch)
Service Limit ...................................................................................................................................................................................  0.08 mm (0.003 inch)

Exhaust: 
Standard (New) .........................................................................................................................................................  0.05 - 0.08 mm (0.002 - 0.003 inch)
Service Limit ...................................................................................................................................................................................  0.11 mm (0.004 inch)

INNER DIAMETER: 

Intake: 
Standard (New) .........................................................................................................................................................  6.61 - 6.63 mm (0.260 - 0.261 inch)
Service Limit ...................................................................................................................................................................................  6.65 mm (0.262 inch)

Exhaust: 
Standard (New) .........................................................................................................................................................  6.61 - 6.63 mm (0.260 - 0.261 inch)
Service Limit ...................................................................................................................................................................................  6.65 mm (0.262 inch)

INSTALLED HEIGHT: 

Intake .....................................................................................................................................................................  13.75 - 14.25 mm (0.541 - 0.561 inch)
Exhaust ..................................................................................................................................................................  15.75 - 16.25 mm (0.620 - 0.640 inch)